diff --git a/packages/playwright-core/src/server/firefox/ffPage.ts b/packages/playwright-core/src/server/firefox/ffPage.ts
index d3db91f9e1..1e1db5b908 100644
--- a/packages/playwright-core/src/server/firefox/ffPage.ts
+++ b/packages/playwright-core/src/server/firefox/ffPage.ts
@@ -440,6 +440,7 @@ export class FFPage implements PageDelegate {
     const { data } = await this._session.send('Page.screenshot', {
       mimeType: ('image/' + format) as ('image/png' | 'image/jpeg'),
       clip: documentRect,
+      quality,
       omitDeviceScaleFactor: scale === 'css',
     });
     return Buffer.from(data, 'base64');
diff --git a/packages/playwright-core/src/server/screenshotter.ts b/packages/playwright-core/src/server/screenshotter.ts
index 05f6a160e0..12791e0a49 100644
--- a/packages/playwright-core/src/server/screenshotter.ts
+++ b/packages/playwright-core/src/server/screenshotter.ts
@@ -288,7 +288,8 @@ export class Screenshotter {
     const cleanupHighlight = await this._maskElements(progress, options);
     progress.throwIfAborted(); // Avoid extra work.
 
-    const buffer = await this._page._delegate.takeScreenshot(progress, format, documentRect, viewportRect, options.quality, fitsViewport, options.scale || 'device');
+    const quality = format === 'jpeg' ? options.quality ?? 80 : undefined;
+    const buffer = await this._page._delegate.takeScreenshot(progress, format, documentRect, viewportRect, quality, fitsViewport, options.scale || 'device');
     progress.throwIfAborted(); // Avoid restoring after failure - should be done by cleanup.
 
     await cleanupHighlight();